Cannot get MatchData attribute "teams"

[retzugil]

I'm attempting to grab TeamData from a match using the following on cassiopeia 5.0.1 installed via pip:

import cassiopeia as cass

cass.set_riot_api_key(KEY_HERE)

summoner = cass.get_summoner(name="FromIron", region="NA")

mh = cass.get_match_history(continent=summoner.region.continent, puuid=summoner.puuid)
mh[0].teams

I was expecting the output to be an array of size 2 containing TeamData like:

[<cassiopeia.core.match.Team object at 0x1077193a0>, <cassiopeia.core.match.Team object at 0x107719130>]

But instead I'm receiving an empty array:

[]

---

This might be caused by a lazy loading issue at:

cassiopeia/cassiopeia/core/match.py

Lines 2029 to 2036 in 32c25b3

 @CassiopeiaGhost.property(MatchData) 
 @ghost_load_on 
 @lazy 
 def teams(self) -> List[Team]: 
     return [ 
         Team.from_data(t, match=self) 
         for i, t in enumerate(self._data[MatchData].teams) 
     ] 

which might have to get loaded like this prior to access:

cassiopeia/cassiopeia/core/match.py

Lines 2012 to 2017 in 32c25b3

 if hasattr(self._data[MatchData], "participants"): 
     if not self._Ghost__is_loaded(MatchData): 
         self.__load__(MatchData) 
         self._Ghost__set_loaded( 
             MatchData 
         )  # __load__ doesn't trigger __set_loaded. 

[retzugil]

Close as dupe of #407